Add the following to your docker-compose.yml file:
h2o:
image: yappabe/h2o
links:
- php
# - mailcatcher
volumes_from:
- app
environment:
DOCUMENT_ROOT: /var/www/app/web
INDEX_FILE: app_dev.php
PHP_FPM_SOCKET_PORT: 9000
PHP_FPM_SOCKET_HOST: php